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  Lotus 77 Cosworth
 

  Article Image gallery (24) Chassis (3) Specifications  
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Country of origin:Great Britain
Produced in:1976
Numbers built:3
Designed by:Ralph Bellamy for Lotus
Predecessor:Lotus 76 Cosworth
Author:Wouter Melissen
Last updated:March 29, 2019
Download: All images

Engine
Configuration Ford Cosworth DFV 90º V8
Location Mid, longitudinally mounted
Weight 168 kilo / 370.4 lbs
Construction aluminium block and head
Displacement 2,993 cc / 182.6 cu in
Bore / Stroke 85.7 mm (3.4 in) / 64.8 mm (2.6 in)
Compression 11.0:1
Valvetrain 4 valves / cylinder, DOHC
Camshaft Gear driven
Fuel feed Lucas Fuel Injection
Lubrication Dry sump
Aspiration Naturally Aspirated
Power 485 bhp / 362 kW @ 10,600 rpm
Torque 363 Nm / 268 ft lbs @ 7,000 rpm
BHP/Liter 162 bhp / liter

Drivetrain
Body glass-fibre reinforced plastic
Chassis aluminium monocoque with fully stressed engine
Front suspension lower wishbones, top rockers, coil springs over dampers, anti-roll bar
Rear suspension single lower links, twin upper links, twin trailing arms, coil springs over dampers, anti-roll bar
Steering rack-and-pinion
Front Brakes Girling ventilated discs
Rear brakes Girling ventilated discs, in-board
Gearbox Hewland FG 400 5 speed Manual
Drive Rear wheel drive

Dimensions
Weight 593 kilo / 1,307 lbs
Length / Width / Height 4,407 mm (173.5 in) / 2,032 mm (80 in) / 914 mm (36 in)
Wheelbase / Track (fr/r) 2,616 mm (103 in) / 1,473 mm (58 in) / 1,575 mm (62 in)
Wheels (fr/r) 13 x 10 / 13 x 18
Tyres (fr/r) Goodyear 9.5/20.0 - 13 / 16.2/26.0 - 13

Performance figures
Power to weight 0.82 bhp / kg

Race history
Major wins
1976 Japanese Grand Prix (Mario Andretti in 77/1)

Resources
Related articles
Useful links

  Article Image gallery (24) Chassis (3) Specifications